2021112202111 has 4 divisors (see below), whose sum is σ = 2021434503424. Its totient is φ = 2020789900800.

The previous prime is 2021112202103. The next prime is 2021112202183. The reversal of 2021112202111 is 1112022111202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021112202111 - 2³ = 2021112202103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021112202511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161141250 + ... + 161153791.

It is an arithmetic number, because the mean of its divisors is an integer number (505358625856).

Almost surely, 2^{2021112202111} is an apocalyptic number.

2021112202111 is a deficient number, since it is larger than the sum of its proper divisors (322301313).

2021112202111 is an equidigital number, since it uses as much as digits as its factorization.

2021112202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322301312.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2021112202111 its reverse (1112022111202), we get a palindrome (3133134313313).

Subtracting from 2021112202111 its reverse (1112022111202), we obtain a palindrome (909090090909).

The spelling of 2021112202111 in words is "two trillion, twenty-one billion, one hundred twelve million, two hundred two thousand, one hundred eleven".